RU180373U1 - TERMINAL DOOR BOX - Google Patents

Abstract

The utility model relates to the field of construction and can be used in the design of the door frame of the front door. The technical result, which the utility model is aimed at, is to improve the quality of the door frame insulation made using steel profiles. The above technical result is achieved in the door frame, which includes the outer and inner parts of steel profiles, as well as inserts of insulating polymeric material located between the outer and inner parts of the door frame. The technical result is achieved by the fact that the inner part of the door frame is provided with L-shaped protrusions directed counterclockwise to form a longitudinal gap, the outer part is equipped with L-shaped protrusions, the L-shaped protrusions of the outer part are recessed into the gap between the L-shaped protrusions of the inner part of the door frame, the inserts are made in the form of hollow PVC profiles of a U-shaped cross section with internal partitions and are installed on the edges of the L-shaped protrusions of the inner part. 7 ill.

Description

The invention relates to the field of construction and can be used in the design of the door frame of the front door.

A significant drawback of metal entrance doors is their freezing at low temperatures, that is, condensation of warm air from the room on the cold parts of the door and door frame.

The prior art door frames of entrance doors, made using the technology of "thermal break". A design feature of such an entrance door is the separation of the outer part of the door frame from the inner part using insulating inserts.

From the description of the patent RU 2183243 C2, IPC EV 3/26, publ. 10.061.2002, the known design of the insulating combined profile for the door frame, including metal profiles and insulating strips of polymeric material located between the metal profiles. The planks are connected to the metal profiles by means of consoles formed at the edges of the plank, and grooves for sliding the consoles formed on the metal profiles. The above metal profiles are made of aluminum alloy by extrusion.

The disadvantages of the door frame made of aluminum profiles, compared with the box of steel profiles, are the high cost and low resistance to cracking, which is due to the use of extruded aluminum profiles.

From the descriptions of patents RU 2597559 C1, IPC Е06В 5/06, ЕВВ 5/16, publ. 09/10/2016, and RU 164652 U1, IPC Е06В 5/06, publ. 09/10/2016, the known design of the door frame of the steel door, which includes the inner and outer parts made of steel profiles, and a heat-insulating insert of ship plywood, located between the parts of the door frame.

Fasteners for connecting parts of the door frame and insert from ship plywood are not disclosed in the patent description.

The design disadvantages are the increased complexity of manufacturing, due, in particular, to the need to connect the parts of the box using fasteners and the manufacture of parts from ship plywood with their subsequent varnish coating, and the increased cost due to the use of ship plywood.

For the closest analogue of the utility model adopted door frame, known from the description of patent RU 113772U1, IPC Е06В 1/18, Е06В 3/70, publ. 02/27/2012, which includes internal and external parts made of steel profiles and interconnected by bolts, and inserts of heat-insulating material located between the parts of the door frame. It is proposed to use the “Black Star Dact 3 / 1.2” heat-insulating material as an insert material in the closest analogue - foamed polyethylene with a closed-cell structure of 3 mm thickness.

The disadvantage of the design of the closest analogue is poor thermal insulation.

The disadvantage of the closest analogue is due to the use of bolt elements to connect parts of the door frame, which act as cold bridges, and the unsatisfactory heat-insulating properties of a thin flat insert, which is also deformed by bolting between the flat surfaces of steel profiles.

The objective of the claimed utility model is to create a door frame using steel profiles, characterized by reduced manufacturing complexity and low cost with high quality thermal insulation.

The technical result, which the utility model aims to achieve, is to improve the quality of the door frame insulation made using steel profiles.

The above technical result is achieved in the design of the door frame, which includes the outer and inner parts made of steel profiles, as well as inserts of insulating polymeric material located between the outer and inner parts of the door frame.

The technical result is achieved by the fact that the inner part of the door frame is provided with L-shaped protrusions directed counterclockwise to form a longitudinal gap, the outer part is equipped with L-shaped protrusions, the L-shaped protrusions of the outer part are recessed in the gap between the L-shaped protrusions of the inner part of the door frame, the inserts are made in the form of hollow PVC profiles of a U-shaped cross section with internal partitions and are installed on the edges of the L-shaped protrusions of the inner part.

The utility model is illustrated by the following images. In FIG. 1 shows a fragment of a door frame in isometry with a section. In FIG. 2 shows a door frame, side view, without PVC profiles installed between the parts of the box.

In FIG. 3 shows an enlarged view A indicated in FIG. 2.

In FIG. 4 shows a door frame, side view, complete with PVC profiles.

In FIG. 5 is an enlarged view of B, shown in FIG. four.

In FIG. 6 shows a PVC profile for joining parts of a door frame.

In FIG. 7 (a, b), two varieties of PVC profiles are presented for connecting parts of a door frame.

With reference to FIG. 1-7 are indicated:

1 - the inner part of the door frame;

2 - the outer part of the door frame;

3 - platband;

4, 5 - L-shaped protrusions of the inner part of the box;

6, 7 - PVC profiles;

8, 9 - L-shaped protrusions of the outer part of the box;

10 - the inner part of the door;

11 - the outer part of the door;

12 - PVC profile of the door.

The utility model can be successfully implemented, see FIG. 1-3, in the design of the door frame, including the inner part 1 and the outer part 2.

Each of the parts 1, 2 of the door frame includes four racks made of bent steel profiles, connected by welding and painted.

To implement the utility model, the following changes are made in the design of the door frame.

The door frame is equipped with pieces of PVC profiles of a U-shaped cross section with internal partitions (see Fig. 5-7) in the amount of 8 pieces, two profile sections for each rack of the inner part of the door frame.

PVC profiles are performed by extrusion, hollow inside, with internal partitions playing the role of stiffeners. In FIG. Figure 7 (a, b) shows two varieties of PVC profiles for joining parts of a door frame, designed to meet the requirements of door manufacturers.

PVC profiles of a U-shaped cross section with internal partitions perform the following functions:

- provide effective thermal separation between parts 1, 2 of the door frame;

- provide sliding along the edges of the L-shaped protrusions 4,5 when connecting parts 1, 2 of the door frame;

- fix parts 1, 2 of the door frame.

Each rack of the inner part 1 of the door frame is provided with two L-shaped protrusions 4, 5, directed counterclockwise with the formation of a longitudinal gap.

The width of the longitudinal gap in the rack of the inner part of the door frame is selected taking into account the fact that the L-shaped protrusions of the corresponding rack of the outer part of the door frame will be recessed into it, the legs of which will then be clamped between the U-shaped PVC profiles 6, 7, pushed onto the edges Г -shaped protrusions 4, 5.

Each rack of the outer part 2 of the door frame is provided with L-shaped protrusions 8, 9.

In FIG. 3, 4, L-shaped protrusions 8, 9 are shown directed in opposite directions. It should be noted that it is also possible to execute L-shaped protrusions 8, 9 directed in one direction (not shown in Fig.).

Cutouts are made in the corners of the outer and inner parts of the door frame, see FIG. 2 (in Fig. 2, the cutout on the right is not indicated by the position) for sliding the PVC profiles and thereby fixing the parts of the door frame relative to each other.

The door frame is made as follows.

Perform flexible steel strip profiles for the production of racks of the inner and outer parts of the door frame.

When each rack is made of several steel profiles, these profiles are joined by welding.

Cutouts are made in each rack to retract the U-shaped PVC profiles 6, 7.

The racks of the inside of the door frame are welded together. The racks of the outer part of the door frame are welded together. The resulting parts 1, 2 of the door frame are painted.

The parts of the door frame are brought together and the L-shaped protrusions 8, 9 of the outer part 2 of the door frame are inserted into the gap formed between the L-shaped protrusions of the inner part 1 of the door frame, as shown in FIG. 2, 3.

Through cutouts in the corners of the struts of the door frame parts, U-shaped PVC profiles 6, 7 are pushed along the edges of the L-shaped protrusions 4, 5 of the racks of the inner part of the door frame 6, fixing the parts of the door frame by clamping the protrusions 8, 9 in the gaps between -shaped protrusions of the inner part 1 of the door frame (see Fig. 4, 5).

L-shaped protrusions are most easily implemented in steel profiles; their use in the design of the door frame provides high manufacturability, low labor intensity and low cost of the door frame.

Due to the presence and relative position of the L-shaped protrusions on the parts of the door frame, as well as the presence and shape of hollow PVC profiles, the connection of the parts of the door frame is performed with high-quality thermal break and without the use of numerous bolted joints that could serve as cold bridges and cause the door frame to freeze.

The use of PVC profiles produced by the extrusion method in the door frame design provides high thermal insulation between the door frame parts at the lowest cost.

The proposed design of the door frame allows, if necessary, to replace U-shaped PVC profiles due to the presence of cutouts in the racks of parts of the door frame.

As shown in FIG. 1, 5, it is possible and appropriate to use PVC profiles also for thermal break between the external and internal parts of the steel door leaf.

The conducted patent studies confirm the world novelty of the utility model.

Tests and operation of prototypes of the utility model confirmed its industrial applicability and compliance with the claimed technical result.

Claims (1)

The door frame, which includes the outer and inner parts made of steel profiles, as well as inserts of insulating polymer material located between the outer and inner parts of the door frame, characterized in that the inner part of the door frame is equipped with L-shaped protrusions directed opposite to the formation of a longitudinal gap, the outer part is provided with L-shaped protrusions, L-shaped protrusions of the outer part are recessed into the gap between the L-shaped protrusions of the inner part of the door frame, the insert is made They are in the form of hollow PVC profiles of a U-shaped cross section with internal partitions and are installed on the edges of the L-shaped protrusions of the inner part.

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